Crawfish are freshwater crustaceans that look like small lobsters. A good place to find crawfish is the southeastern region of the United States — in fact, the crawfish is the official state crustacean of Louisiana!
Depending on where you are, you may hear crawfish referred to as "crayfish," "crawdads," "freshwater lobsters," or even "mudbugs." This last name comes from the crustacean's tendency to hang out in muddy freshwater streams, brooks, swamps, and ditches. The word crawfish comes from crayfish and its Old French source, escrevisse . If you order crawfish in restaurant, be prepared to crack them open and peel them like shrimp.